Recently the first footage of Rheinmetall's new 130mm L/51 cannon in action was revealed to the world, and with a peculiar test bed to boot! Normally you'd think the German company to use a German Leopard 2 but Rheinmetall oddly enough chose the Biritsh Challenger 2 with a similar turret to their (Rheinmetall's) CLEP upgrade they are offering to the British Army. Should be noted though the turret has a few differences to the CLEP upgrade's turret that was shown a few months back most notably is

Танковедение будущего: Challenger 2 с пушкой NG 130